/Engine/Plugins/Runtime/Synthesis/Source/Synthesis/Classes/SourceEffects/SourceEffectPanner.h
[USTRUCT](Programming/UnrealArchitecture/Reference/Structs)([BlueprintType](Programming/UnrealArchitecture/Reference/Structs/Specifiers/BlueprintType)) struct FSourceEffectPannerSettings
float
Pan
The pan of the source. -1.0 means left, 0.0 means center, 1.0 means right.
float
Spread
The spread of the source. 1.0 means left only in left channel, right only in right; 0.0 means both mixed, -1.0 means right and left channels are inverted.